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In this lesson, you will learn about buoyancy and the conditions of floating for objects.
“Health” and “illness” refer to two opposite states of the body. This lesson is about these states.
Albert Einstein’s life is surrounded by numerous legends, but the facts about him are also quite interesting.
This lesson presents the harmful effects of addictions on the human body.
Learn how fluid molecules interact with each other and their environment.
This lesson explains the reasons and consequences of the formation of climatic zones.
A lesson about the structure of the Universe and the Solar System.
Dogs are our loyal companions. Learn about their anatomy and behaviour.
In this lesson, you can learn about carbon monoxide and carbon dioxide.
A lesson about Roman snails.
A lesson about walnut trees and walnut fruits.
A lesson about gardens, plants and their organs.
Dive into the mysterious world of Ancient Egyptian religion.
A lesson about edible frogs.
A lesson about the special properties of glass, the process of glassmaking and the various types of glass.
Houseflies are among the best-known animals, they can be found in every region inhabited by humans. Let's learn about these arthropods.
This lesson introduces the position and anatomy of the heart, as well as the blood flow and heart sounds.
Playful tasks for practising measurements, quantities and units of measurements.
This lesson introduces you to the world of minerals.
In this lesson you will learn more about the life of fish.